129429680

素因数分解:

$2^4\times 5^1\times {\mathrm{1617871}}^1$

素因数の和:1617884

約数の個数: 20

約数和(自身を含む): 300924192

約数和(自身を除く): 171494512

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1617871, 3235742, 6471484, 8089355, 12942968, 16178710, 25885936, 32357420, 64714840, 129429680]

約数ペア:

[(1, 129429680), (2, 64714840), (4, 32357420), (5, 25885936), (8, 16178710), (10, 12942968), (16, 8089355), (20, 6471484), (40, 3235742), (80, 1617871)]